-38.43% is the change from 635 to 391
Calculation steps:
[( 391 - 635 ) ÷ 635] x 100 = -38.43%
Formula
Percentage change = [(391 - 635) / 635] x 100
Subtract the new number by the original number
391 - 635 = -244
-244 ÷ 635 = -0.384251968503937
-0.384251968503937 x 100 = -38.43%